As Iowans prepare to head to the caucuses on Monday for the nation's first votes in the presidential primaries, the campaigns are pulling out all the stops. The mailer sent out by one Republican campaign, however, might end up backfiring. Tom Hinkeldey, a resident of Alta, Iowa, tweeted a photo (which was later deleted because it included his personal address) on Friday evening of a mailer Sen. Ted Cruz’s campaign sent addressed to his wife, Steffany. The mailer was a large card printed to look like a manila envelope on one side and was labeled in all capital letters, "ELECTION...